Solvent and ligand effects on α-pinene epoxidation with Methyltrioxorhenium/hydrogen peroxide system (MTO/H2 O2 )
DOI:
https://doi.org/10.17533/udea.redin.327311Keywords:
α-pinene epoxidation, methyltrioxorhenium, hydrogen peroxide, basic ligands, solvent effect, pyridine, N-oxidesAbstract
Several ligands were studied as co-catalysts for α-pinene epoxidation with MTO/H2O2. Pyridine is an efficient co-catalyst with dichlorometane, tetrahydrofuran or ethyl acetate. However, large amounts of pyridine are required. In contrast, with relatively small amounts of the Aromox surfactant, high activity and selectivity to α-pinene epoxide are obtained. The latter system has the additional advantage of requiring no chlorinated solvents which are environmentally less friendly.
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